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Functions as a Service

Overview#

Functions as a Service (FaaS) is where some amount of server-side logic is still written by the application developer but unlike traditional architectures is run in stateless compute containers that are event-triggered, ephemeral (may only last for one invocation), and fully managed by a Cloud Service Provider.

Building an application following this model is one way of achieving a "serverless" architecture, and is typically used when building microservices based applications.

Some implementations are:

Functions as a Service all use the same basic Serverless event-triggered structure consisting of:

  • Trigger (Event-triggered) - A class of event emitted by event sources.
  • Actions - Encapsulate the actual code to be executed
  • Rules - provide association between a Event-triggered and an action.

Functions as a Service and Synchronous Operation and Asynchronous Operation#

More Information#

There might be more information for this subject on one of the following: